BIOA02H3 Chapter Notes - Chapter 45.4: Circadian Clock, Lightdark, Periodical Cicadas

• School: UTSC
• Department: Biological Sciences
• Course: BIOA02H3
• Professor: Ivana Stehlik

Document Summary

At a cellular level, learning involves changing the strength in neuronal connections. Cns is capable of lots of information processing. The ways in which nervous and endocrine systems and the input of experience are integrated to generate adaptive behaviours are remarkable. Orientation involves a directed response to a stimulus. Taxes are movements in a speci c direction in response to a stimulus: e. g. movement oriented to a magnetic eld, called magnetotaxis richard. Hole where they swam south instead of north and ended up dying: bacteria are able to sense a magnetic eld and move in relation to that eld. Navigation is demonstrated by the remarkable ability of homing in birds. Lots of animals use environmental cues to migrate long distances. 15 degrees through the sky the pigeon needs sun info as well as some way to keep time so they have biological clocks. Biological clocks provide important time cues for many behaviours.